AUDI · SIMOS 8.4 ECU · petrol

AUDI S4 SIMOS 8.4 tuning files

AUDI S4 on the SIMOS 8.4: matched, calibrated and delivered with care. The matched variants sit between 333 and 333 HP from the factory. There are 7 distinct variants on file for this combination. On this petrol engine the focus is sharper throttle and useful, repeatable gains. Every file is matched to the exact calibration on your vehicle and signed off by an operator.

Upload your file →All S4 coverage Custom ECU tuning file service

Available solutions

What we can run on the SIMOS 8.4 for this petrol — the precise options narrow down by engine and software version.

Stage 1 Stage 2 Swirl Flaps OffLambda / O2OPF/GPF Off

Engine variants & ECU software

7 distinct variants for the AUDI S4 on the SIMOS 8.4 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 3000 333HP
Engine code: CAKA
Generation: B8 2008-2015
Matched gains engine: S4 3.0 TFSI 333
Controller brand: SIEMENS
ECU: SIMOS 8.4
Stock power: 333 HP
Stage 1 power: 400 HP
Power increase: +67 HP (+20%)
Stock torque: 440 Nm
Stage 1 torque: 520 Nm
Torque increase: +80 Nm (+18%)
ECU HW: 6576655725
SW upgrade: 8K0907551_0006
Calibration: 8K0907551_0006

Variant 2

ECU

Catalog engine: 3000 333HP
Generation: B8 2008-2015
Matched gains engine: S4 3.0 TFSI 333
Controller brand: SIEMENS
ECU: SIMOS 8.4
Stock power: 333 HP
Stage 1 power: 400 HP
Power increase: +67 HP (+20%)
Stock torque: 440 Nm
Stage 1 torque: 520 Nm
Torque increase: +80 Nm (+18%)
SW upgrade: 8K0907551C_0002
Calibration: 8K0907551C_0002

Variant 3

ECU

Catalog engine: 3000 333HP
Generation: B8 2008-2015
Matched gains engine: S4 3.0 TFSI 333
Controller brand: SIEMENS
ECU: SIMOS 8.4
Stock power: 333 HP
Stage 1 power: 400 HP
Power increase: +67 HP (+20%)
Stock torque: 440 Nm
Stage 1 torque: 520 Nm
Torque increase: +80 Nm (+18%)
SW upgrade: 8K0907551D_0003
Calibration: 8K0907551D_0003

Variant 4

ECU

Catalog engine: 3000 333HP
Engine code: CAKA
Generation: B8 2008-2015
Matched gains engine: S4 3.0 TFSI 333
Controller brand: SIEMENS
ECU: SIMOS 8.4
Stock power: 333 HP
Stage 1 power: 400 HP
Power increase: +67 HP (+20%)
Stock torque: 440 Nm
Stage 1 torque: 520 Nm
Torque increase: +80 Nm (+18%)
ECU HW: 6576655723
SW upgrade: 8K0907551_0006
Calibration: 8K0907551_0006

Variant 5

ECU

Catalog engine: 3000 333HP
Generation: B8 2008-2015
Matched gains engine: S4 3.0 TFSI 333
Controller brand: SIEMENS
ECU: SIMOS 8.4
Stock power: 333 HP
Stage 1 power: 400 HP
Power increase: +67 HP (+20%)
Stock torque: 440 Nm
Stage 1 torque: 520 Nm
Torque increase: +80 Nm (+18%)
SW upgrade: 8K0907551_0004
Calibration: 8K0907551_0004

Variant 6

ECU

Catalog engine: 3000 333HP
Generation: B8 2008-2015
Matched gains engine: S4 3.0 TFSI 333
Controller brand: SIEMENS
ECU: SIMOS 8.4
Stock power: 333 HP
Stage 1 power: 400 HP
Power increase: +67 HP (+20%)
Stock torque: 440 Nm
Stage 1 torque: 520 Nm
Torque increase: +80 Nm (+18%)
ECU SW: 0002
ECU HW: 8K0907551B
SW upgrade: 8K0907551B_0002
Calibration: 8K0907551B_0002

Variant 7

ECU

Catalog engine: 3000 333HP
Generation: B8 2008-2015
Matched gains engine: S4 3.0 TFSI 333
Controller brand: SIEMENS
ECU: SIMOS 8.4
Stock power: 333 HP
Stage 1 power: 400 HP
Power increase: +67 HP (+20%)
Stock torque: 440 Nm
Stage 1 torque: 520 Nm
Torque increase: +80 Nm (+18%)
SW upgrade: 8K0907551C_0005
Calibration: 8K0907551C_0005

Related vehicles

Other vehicles built on the SIMOS 8.4 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the AUDI S4 on the SIMOS 8.4?

Stage 1, Stage 2, Swirl Flaps Off, Lambda / O2, OPF/GPF Off. The exact set depends on the specific engine and software version.

Do you cover the SIMOS 8.4 ECU software on this model?

Yes — the AUDI S4 on the SIMOS 8.4 ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.

How is the file delivered?

Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.